摘要
从菜园贮粪池旁土壤中分离到1株以硝酸钾为氮源进行好氧反硝化作用的细菌,命名为NCDX-3。分离菌株革兰氏染色为阳性,球状,菌落颜色为土黄色,生理生化实验初步鉴定该细菌为海球菌(Marinococcussp.)。研究结果表明,在好氧条件下,分离菌株在硝酸盐初始浓度为1.288g/L的反硝化培养基中,培养7d,硝酸盐除去率达到75%,且反硝化作用主要发生在指数期。
An aerobic denitrifying bacterial strain named NCDX-3 was isolated from soil. Strain NCDX-3 was gram-positive coccus bacteria. The clones of the strain were desert tan. After physiological and biochemical experiments, the strain was presum- ptively classified within the genus Marinococcus. The results showed that the strain had a high removal efficiency for nitrate （75%）in seven days when the initial medium containingl.288 g/L nitrate was used. Denitrification occurred in the exponential phase.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2007年第8期266-268,共3页
Food Science
基金
长江学者和创新团队发展计划项目(IRT0540)
关键词
好氧反硝化
鉴定
海球菌
aerobic denitrification
screening
Marinococcus sp.
